Maisbich (Luxemburg) river basin discharge data, sensor Q4, month 2010-03

Parent item: Maisbich (Luxemburg), data from discharge meter Q4 (Qup), 2006-12 and later Measuring instrument: Maisbich basin: V-notch discharge meter Q4 (Qup) Type: Van Essen TD-Driver, SN 19613 This instrument measures pressure with one absolute sensor. It also measures temperature. Height V-notch above sensor: 0.0018m. Datasets with correction contain the corrected discharge observed at the Vnotch. The discharge is calculated as Q=Cd*h^2.5 After correcting the logger measurements with hand measured depths we interpolated the difference (dH) Then we determined the factor Cd with discharge measurements which we also interpolated The timing of hand measurements can be corrected to better represent the logged values The last corrections (variable "clean_corr") were made for blocking of the V-notch weir as folows: z1 represents the last good discharge value after which sedimentation slowly starts blocking the weir z2 represents the moment when the blocking is max z3 represents the moment just before cleaning of the weir z4 represents the moment after cleaning of the weir The max difference in discharge is Q(z3)-Q(z4)

父项：Maisbich（卢森堡），来自流量仪Q4（Qup）的数据，2006年12月及以后
测量仪器：Maisbich流域：V型缺口流量仪Q4（Qup）
型号：Van Essen TD-Driver，序列号19613
该仪器采用一个绝对压力传感器测量压力，同时也测量温度。
传感器上方V型缺口高度：0.0018米。
带校正的数据集包含V型缺口处观测到的校正后流量。
流量计算公式为Q=Cd*h^2.5。
使用手工测量的深度校正记录仪数据后，我们对差值（dH）进行了插值处理。
随后，我们利用同样经过插值处理的流量测量值确定了系数Cd。
手工测量的时间可进行校正，以更准确地反映记录仪数据。
最后一项校正（变量"clean_corr"）针对V型缺口堰的堵塞问题，具体如下：
z1代表堰体开始缓慢淤积堵塞前的最后一个有效流量值；z2代表堵塞程度达到最大的时刻；z3代表堰体清理前的时刻；z4代表堰体清理后的时刻；流量的最大差值为Q(z3)-Q(z4)